public static void main(String[] args) throws Exception {
String id = LinkEncrypt.generateToken("123");
System.out.println(id);
String userId = LinkEncrypt.getUserIdByToken(id);
System.out.println(userId);
}
public static String getUserIdByToken(String token) throws IOException {
String[] keys = LinkEncrypt.unToken(token);
if (null != keys && keys.length == 3) {
return keys[2];
}
return null;
}